Effectiveness of certain developed theorems in teaching Trigonometric Integrals

The study was designed to test the effectiveness of certain developed theorems in teaching Trigonometric Integrals. The research design consists of the Pre-test-Intervention-Post-test procedure where the experimental subjects of the study were the students enrolled in an Integral Calculus class of 2007-2008. Results of the study reveal that the intervention has a positive effect on the performance rating in the pre-test and the post-test. Comparison of the said ratings reveals significant differences exist at the 0.05 level of significance, both for two-tail and one-tail tests. Tests reveal a significantly positive gain of the students in the two aforementioned tests. However, results of the comparison on the number of students who passed the pre-test and post-test are inconclusive. A scrutiny of the frequency of mistakes incurred by the students per questionnaire item in the two tests reveals that the occurrence of their pitfalls decreases while others which were less dominant before surfaced. Results also reveal a decrease in the frequency of mistakes in most of the items, an increase in some, while others were unchanged. Results of the student evaluation of the theorems show that most students have a problem memorizing the different formulas of the theorems.